I had a 76hr mess-up in my Multi-Eng section. That's what you get when you're flying late night freight and updating logbooks at the same time. Anyways, I went through and found my error, then on the last page where I was just finishing up, I put a notation that "Corrected for math error on X-XX-2006, adding 76.0 to MEL time." Then put my initials, or signature(either is acceptable).